<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <script src="vue.js"></script>
    <script src="index.js"></script>
    <link rel="stylesheet" href="index.css">
</head>
<body>
<div id="app">

</div>
</body>
<script>
var app=new Vue({
    el:"#app"

    })
</script>
</html>